package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.mapper.CategoryMapper;
  import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
  
  @Service
  public class CategoryServiceImpl extends ServiceImpl<CategoryMapper,Category> implements CategoryService{

    @Autowired
    private DishService dishService;
    @Autowired
    private SetmealService setmealService;
    @Override
    public void remove(Long id) {
      LambdaQueryWrapper<Dish> dishLambdaQueryWrapper = new LambdaQueryWrapper<>();
      dishLambdaQueryWrapper.eq(Dish::getCategoryId,id);
      int count = dishService.count(dishLambdaQueryWrapper);
      if (count>0){
        throw new CustomException("该分类有关联的菜品，不能删除");
      }

      LambdaQueryWrapper<Setmeal> setmealLambdaQueryWrapper = new LambdaQueryWrapper<>();
      setmealLambdaQueryWrapper.eq(Setmeal::getCategoryId,id);
      int count2 = setmealService.count(setmealLambdaQueryWrapper);
      if (count2>0){
        throw new CustomException("该分类有关联的套餐，不能删除");
      }
      this.remove(id);

    }
  }